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This is at least a portion of the meteor that fell to earth last week.

Updated at 11:00 AM PST on Monday, Oct 22, 2012

The first chunk of meteorite from the fireball that streaked across California skies last week was found this weekend, after it slammed into a woman's roof and landed on her lawn.

The find came after days of searching by scientists from the SETI Institute for potential remnants of the meteor's blaze, NBC Bay Area reported.

Meteorite Discovered in Novato Yard

Lisa Webber said she remembered an odd noise she had heard Wednesday night — as of something, possibly an animal, on her roof — after she read an article about the meteor's trajectory Saturday.

The 61-year-old nurse contacted scientists at the SETI Institute after she found a rock in her yard in the North Bay city of Novato.

Bright Light, Loud Boom May Have Been Meteor

The Bay Area was buzzing Wednesday night after a bright streak of something moved through the sky. It was accompanied by a loud boom. (Published Thursday, Oct 18, 2012)

Those researchers, led by meteor expert and NASA Ames researcher Peter Jenniskens, inspected the dense 63-gram, two-inch rock — as well as the divot in her roof shingles where it hit — and confirmed their suspicions: It was a meteorite.

"I wasn't sure at first," Jenniskens said. "The meteorite looks very unusual, because much of the fusion crust had come off." Fusion crust is a thin, glassy coating formed on the surface of a meteorite by the intense heat generated by a meteor's speeds.

"The significance of this find is that we can now hope to use our fireball trajectory to trace this type of meteorite back to its origins in the asteroid belt," Jenniskens added.